feat: sort columns for iOS data browser

[datlechin]

Summary

• Sort by any column via native Menu with Picker (.inline style)
• Checkmark shows active sort column, ASC/DESC direction picker
• Server-side ORDER BY in SQL query
• Works with filters and pagination
• Filled icon when sort active

Test plan

• Open table, tap sort icon — shows column list with "Default" checked
• Select column — rows reorder, checkmark moves, icon fills
• Tap Order picker — switch between Ascending/Descending
• Select "Default" — removes sort, icon unfills
• Sort + filter — both applied correctly
• Sort + pagination — persists across pages